L'Oréal Professionnel Serie Expert Absolut Repair Molecular Rinse-Off Serum - 250mlWhen hair is damaged, its molecular structure, composed of peptides, is compromised. But most peptides are too big to be reinjected into the fibre, making damage almost irreversible. Scientific discovery Absolut Repair Molecular. Help repair molecular hair damage and restore hair's original strength*. For the first time, LOral's Advanced Research team successfully managed to decompose peptides, to inject their components separately into the fibre**.